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by adi_1234
Tue Jun 29, 2021 11:40 am
Forum: ESP-IDF
Topic: i2c_master_cmd_begin() returns ESP_FAIL
Replies: 1
Views: 3571

i2c_master_cmd_begin() returns ESP_FAIL

Hello, i am trying to read time from the rtc - PCF85263ATT, so i start with writing the write-slave-address (0xA2) and the register to start reading from (seconds register 0x1) and i get NACK (as it shows on the oscilloscope). This NACK causes the failure of i2c_master_cmd_begin() with ESP_FAIL erro...